Energy and economic analysis of evaporative vacuum easy desalination system with brine tank

Nowadays, the freshwater is one of the most critical issues for humans. In this regard, desalination systems can be beneficial. In this research, at first different types of desalination systems and their governing equations is studied. Then the energy consumption of evaporative vacuum easy desalination system with brine tank is modeled. This modeling and the equations governing the energy consumption of new subsets such as the evaporator, condenser, vacuum pump, and other pumps are presented. In the end, the economic modeling of the system is investigated. The feasibility of using the system is reported in three cities (Abu Dhabi, Las Palmas, and Perth). The results shown that the annual operating cost of the pumps is estimated to be 0.19 Meuro yr(-1), 0.51 Meuro yr(-1) and 0.14 Meuro yr(-1) for Abu Dhabi and Las Palmas and Perth respectively. Also, the annual cost of fresh water production is compared with other reaches in these cities. The results are shown that Perth has the lowest cost of the fresh water output at 0.67 Meuro yr(-1) and Las Palmas has the highest cost of fresh water production with 0.104 Meuro yr(-1). The reason is the difference in the electricity prices in these cities.